1-Benzoyl-2-isopropylhydrazine → HCID 11962208, compound

HRID 1724161Notes

Reaction equation

HRID 1724161 reaction equation
[CH:1]1([O:6][C:7]2[CH:12]=[CH:11][C:10]([F:13])=[CH:9][C:8]=2[CH2:14][CH2:15][C:16]([OH:18])=O)[CH2:5][CH2:4][CH2:3][CH2:2]1.[CH:19]([NH:22][NH:23][C:24](=[O:31])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)([CH3:21])[CH3:20].C(N(C(C)C)CC)(C)C.C1CN([P+](Br)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F>CN(C=O)C>[CH:1]1([O:6][C:7]2[CH:12]=[CH:11][C:10]([F:13])=[CH:9][C:8]=2[CH2:14][CH2:15][C:16]([N:22]([CH:19]([CH3:21])[CH3:20])[NH:23][C:24](=[O:31])[C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[O:18])[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

6

Reactant 4

HCID 188691-Benzoyl-2-isopropylhydrazineHCID 81531DiisopropylethylamineHCID 2733179PyBroPHCID 68798990HCID 68798990, compound

Product 1

HCID 11962208HCID 11962208, compoundYield 30%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 3-(2-cyclopentyloxy-5-fluoro-phenyl)-propionic acid (220 mg, 0.87 mmoles) and benzoic acid N′-isopropyl-hydrazide (130 mg, 0.73 mmoles) in DMF (5mL) was treated with diisopropylethylamine (0.32 mL, 1.81 mmoles), and PyBroP (507 mg, 1.09 mmoles) at room temperature for 48 h. The reaction mixture was partitioned between 1N HCl and ethyl acetate. The organic layer was washed successively with saturated aqueous sodium bicarbonate and brine, then dried over sodium sulfate, filtered and concentrated. The crude was absorbed on silica and purified on a silica gel column with a 20-40% ethyl acetate/hexanes gradient to afford the product as a solid (90 mg, 30%). LC-MS m/e 413.32 (M+H+)

Workup

  1. customThe reaction mixture was partitioned between 1N HCl and ethyl acetate
  2. washThe organic layer was washed successively with saturated aqueous sodium bicarbonate and brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude was absorbed on silica
  7. custompurified on a silica gel column with a 20-40% ethyl acetate/hexanes gradient

Sources & evidence

ORD record
ord-47248cedffda4ea2b6d45a13cfe8dddb
Source dataset
uspto-grants-2009_02
Patent number
US07485752B2

Reaction notes

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